The Global Volcanism Program has no activity reports for Hrómundartindur.

The Global Volcanism Program has no Weekly Reports available for Hrómundartindur.

The Global Volcanism Program has no Bulletin Reports available for Hrómundartindur.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Cones

Feature Name

Feature Type

Elevation

Latitude

Longitude

Maelifell

Tuya

370 m

64° 6' 0" N

21° 12' 0" W

Midfell

Tuya

322 m

64° 12' 0" N

21° 2' 0" W

Thermal

Feature Name

Feature Type

Elevation

Latitude

Longitude

Olkeduhals

Thermal

Basic Data

Volcano Number

Last Known Eruption

Elevation

LatitudeLongitude

371051

Unknown - Evidence Uncertain

550 m / 1804 ft

64.083°N
21.333°W

Volcano Types

Stratovolcano

Rock Types

MajorBasalt / Picro-Basalt

Tectonic Setting

Rift zoneOceanic crust (< 15 km)

Population

Within 5 kmWithin 10 kmWithin 30 kmWithin 100 km

5,738
5,738
26,028
201,964

Geological Summary

Hrómundartindur is a small volcanic system located south of Thingvallavatn lake and immediately east of the Hengill volcanic system. It lies at a ridge-ridge-transform triple junction at the eastern end of the Reykjanes Peninsula, where the west Iceland volcanic zone changes direction from approximately W-E to SW-NE. Hrómundartindur was last active about 10,000 years ago, and displays vigorous geothermal activity at the Ölkeduháls geothermal field. The most recent eruptions in the Ölkeduháls area took place at the end of the latest glacial period, but Ölkeduháls currently contains numerous hot springs, mud pools, fumaroles, and mineral warm springs. Increased seismic activity and slow land uplift beginning in 1994 indicated magma flow into the roots of the volcanic system at 7 km depth. The activity continued for more than 4 years.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Remarks: Uplift near the Hengill triple junction is associated with an earthquake swarm.

Observed interferograms of the Hengill area for four different time intervals. The time interval appears in the upper right corner of each panel; the orbit numbers appear at lower left; and the altitude of ambiguity ha appears at lower right. One fringe represents 28 mm of range change. Two concentric fringes are visible in the 4-year interferogram (d) indicating at least 6 cm of uplift between August 1993 and August 1997.

Emission History

There is no Emissions History data available for Hrómundartindur.

Photo Gallery

Steam rises from a hot pool in the Olkeduháls geothermal area of the Hrómundartindur volcanic system, which lies south of Thingvallavatn lake. The Olkeduháls geothermal field contains numerous hot springs, mud pools, fumaroles, and mineral warm springs. The Hengill volcanic system forms the ridge on the skyline immediately west of the Hrómundartindur volcanic system.

Photo by Lee Siebert, 2008 (Smithsonian Institution).

A group of volcanologists on a field trip observe activity at the Olkeduháls geothermal field of the Hrómundartindur volcanic system. This small volcanic system lies at a ridge-ridge-transform triple junction at the eastern end of the Reykjanes Peninsula, where the west Iceland volcanic zone changes direction from approximately W-E to SW-NE. The latest eruptions at Hrómundartindur took place at the end of the latest glacial period, but Hrómundartindur displays vigorous geothermal activity at the Olkeduháls geothermal field.

Photo by Lee Siebert, 2008 (Smithsonian Institution).

GVP Map Holdings

The Global Volcanism Program has no maps available for Hrómundartindur.

Smithsonian Sample Collections Database

External Sites

The Catalogue of Icelandic Volcanoes is an interactive, web-based tool, containing information on volcanic systems that belong to the active volcanic zones of Iceland. It is a collaboration of the Icelandic Meteorological Office (the state volcano observatory), the Institute of Earth Sciences at the University of Iceland, and the Civil Protection Department of the National Commissioner of the Iceland Police, with contributions from a large number of specialists in Iceland and elsewhere. This official publication is intended to serve as an accurate and up-to-date source of information about active volcanoes in Iceland and their characteristics. The Catalogue forms a part of an integrated volcanic risk assessment project in Iceland GOSVÁ (commenced in 2012), as well as being part of the effort of FUTUREVOLC (2012-2016) on establishing an Icelandic volcano supersite.

Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.

Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.

Incorporated Research Institutions for Seismology (IRIS) Data Services map showing the location of seismic stations from all available networks (permanent or temporary) within a radius of 0.18° (about 20 km at mid-latitudes) from the given location of Hrómundartindur. Users can customize a variety of filters and options in the left panel. Note that if there are no stations are known the map will default to show the entire world with a "No data matched request" error notice.

Geodetic Data Services map from UNAVCO showing the location of GPS/GNSS stations from all available networks (permanent or temporary) within a radius of 20 km from the given location of Hrómundartindur. Users can customize the data search based on station or network names, location, and time window.

The DECADE portal, still in the developmental stage, serves as an example of the proposed interoperability between The Smithsonian Institution's Global Volcanism Program, the Mapping Gas Emissions (MaGa) Database, and the EarthChem Geochemical Portal. The Deep Earth Carbon Degassing (DECADE) initiative seeks to use new and established technologies to determine accurate global fluxes of volcanic CO2 to the atmosphere, but installing CO2 monitoring networks on 20 of the world's 150 most actively degassing volcanoes. The group uses related laboratory-based studies (direct gas sampling and analysis, melt inclusions) to provide new data for direct degassing of deep earth carbon to the atmosphere.

WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.

EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).